package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.apache.shiro.util.CollectionUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;
    @Autowired
    AttrGroupDao attrGroupDao;
    @Autowired
    CategoryService categoryService;
    @Autowired
    CategoryDao categoryDao;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<>()
        );

        return new PageUtils(page);
    }

    @Override
    @Transactional
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
//        attrEntity.setAttrName(attr.getAttrName());
        BeanUtils.copyProperties(attr, attrEntity);
        // 1. 保存基本数据
        this.save(attrEntity);
        // 2. 保存关联关系
        if(attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>()
                .eq("attr_type","base".equalsIgnoreCase(type)?
                        ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():
                        ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode()); //如果是基本类型就查1

        if(catelogId != 0){
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id", key)
                        .or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        // 拿到全部的分页记录
        List<AttrEntity> records = page.getRecords();
        // 查询所属分类以及所属分组
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            // 实例化数据传输对象 将 attrEntity的分类名字以及分组名字 复制到该对象
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            //1.查询组名称
            if("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            // 根据attrEntity的分类id 查询到分类对象并设置分类姓名
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());
        //封装到分页工具类
        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, respVo);
//        respVo.setAttrGroupId();
        //1. 设置分组信息
        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
        AttrAttrgroupRelationEntity attrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                .eq("attr_id", attrId));
        if(attrgroupRelation != null) {
            respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
            AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
            if(attrGroupEntity != null)
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
            }
//
        }
        //2. 分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if(categoryEntity != null) {
            respVo.setCatelogName(categoryEntity.getName());
        }
        return respVo;
    }
    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);//attr是页面提交过来的数据
        this.updateById(attrEntity);//先用原版的update队基本数据修改
        //1.修改分组关联
        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>()
                    .eq("attr_id", attr.getAttrId()));
            if (count > 0) {
                relationDao.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_id", attr.getAttrId()));
            } else {
                relationDao.insert(relationEntity);
            }
        }
    }

    /**
     * 根据分组id查找关联的所有基本属性
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                .eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map((attr) -> attr.getAttrId()).collect(Collectors.toList());
        if(CollectionUtils.isEmpty(attrIds)) return null;
        List<AttrEntity> attrEntities = this.listByIds(attrIds);
        return attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
//        relationDao.delete(new QueryWrapper<>()
//                .eq("attr_id",)
//                .eq("attr_group_id",));
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分茱里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //当前分组只能关联自己所属分类下的没有被引用的属性
        //比如基本信息只能关联手机分类下，没有引用的机器参数
        //2.1 当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>()
                .eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(AttrGroupEntity::getAttrGroupId).collect(Collectors.toList());
        //2.2 这些分组关联下的其他属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                .in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(AttrAttrgroupRelationEntity::getAttrId).collect(Collectors.toList());
        //2.3 从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>()
                .eq("catelog_id", catelogId)
                .notIn("attr_id", attrIds)
                .eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds != null && attrIds.size() > 0)
                wrapper.notIn("attr_id",attrIds);
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key)
                .or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);
        return pageUtils;
    }

    //在指定的所有属性集合里面，挑出检索属性
    @Override
    public List<Long> selectSearchAttrsIds(List<Long> attrIds) {
//        return baseMapper.selectSearchAttrIds(attrIds);
        LambdaQueryWrapper<AttrEntity> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.select(AttrEntity::getAttrId).in(AttrEntity::getAttrId,attrIds).eq(AttrEntity::getSearchType,"1");
        //这里有一个类型转化 Attrentity -> Long
        List<Long> collect = list(queryWrapper).stream().map(item -> item.getAttrId()).collect(Collectors.toList());
        return collect;
    }

}